Stabilo Swing Cool Highlighters are possible the most bleed-proof highlighter we have used. On most papers, you cannot even see it on the other side of the page. These flat, pocket-sized highlighters feature a glossy and striped look and a non-slip, matte-finish grip zone. The modern pen-style shape is great for quick and efficient highlighting, while the practical clip makes it perfect for highlighting on the go. With fluorescent, water-based ink that is ideal for paper, copies and faxes, and a chisel tip nib, allowing the creation of both thick and thin lines.